Well, I've seen a poll about reverse harem but never found anything like this so I wanna know your opinions.

Shuffle! is my favorite but I don't agree with the ending. KEY anime's will be my second bet, they have a lot of good OST's and a well choreographed comedy scenes. Da Capo never fails to captivates me with its twists and turns and School Days is one of those shocking endings I'd never imagine in an anime. I like others as well. Here are some more harem anime's I remembered watching:

Ah! My Goddess - Keichi is one lucky guy, he had wish for a goddess to be at his side, and what more, some other fell for him

Fate Stay Night - magic, servants, mages and the War for the Holy Grail. Shiro got himself involve in a sudden twist of fate interwinding with his past and his feelings.

Futakoi - twins, twins, twins! a lot of twins in here. what a lucky guy is the protagonist.

Girls Bravo - a different world of Seiren where men are a rare species. our protagonist coincidentally traveled there and bringing back a girl to earth, their adventure begins.

Onegai Twins - Speaking of twins again, here is a three person twin. Two girls claim to be the protagonist's twin but only one of them should. What happens now to their lives?

Ichigo 100% - Manaka is just one of the luckiest man on earth. He is just one ordinary guy but when he confessed to the school idol in an extra ordinary way (and got accepted!), his life was changed. More girls get closer to him as he moved on to college. Too bad, they didn't finished the anime and left it hanging.

Ai Yori Aoshi - this one centers mainly on the main heroine (for I can't see any other he could end up with), but I'd still classify it as a harem one.

H2O ~Footprints in the Sand~ - one of my favorite short series. There's so much depth to this one that I wouldn't call it a typical harem anime. Well, just watch this and see.

Elfen Lied - Bloody one, but nice. I miss this anime, too bad, it has been licensed already.

Nagasarete Airantou - well, what would you do if you just blown away into an island with only girls as residents and all wanted to marry you? The main guy here is also named Ikuto (same as that of Ikuto in Shugo Chara).

Negima! (Mahou Sensei Negima) - a male teacher in an all-girls school and furthermore he's a kid and a magician at that!

Maburaho - Shikimori is the world's greatest magician or shall I say the world's kindest person to attract four lovely girls to him

Hanaukyo Maids - one hell of a fan service anime. however, the main character seems to be allergic to girls except one.

He is My Master - another maid ecchi anime. Who wouldn't want to be rich to be able to hire some wonderful maids to serve you..

Hand Maid May - another anime with maid robots coming from the future. High fan service for you.

Hand Maid Mai - Creating a movie is quite a great task. Now here comes our director who has been blessed with three maid robots designed from his memory of his former childhood friend. Unfortunately, this anime was discontinued. I'm just hoping some company will pick it up and continue the series.

Lovely Idol - no intimate romance here, just that many of those Idols he raised still look up to him as a manager

Koi Koi 7- if you like those girls who rush into battle other than swords and stuff, better watch this one

Love Hina - a big hit who became a dating sim game, they should have released another season.

Otoboku - one guy disguised himself as a woman to get to an all-girls school and suddenly became popular as to become the school elder... that was some guts he has there

They are my noble masters - quite interesting, though I'd also classify hayate no gotoku in here too

Zero no Tsukaima - well, I just can't get enough of this one. Saito is one lucky guy (who is always unlucky before) for having those girls care so much for him especially Louise.

Mahoroba- don't know how I ended upn watching this one, but I had a good laugh. The main girl has several built-in (or shall I say parallel) personalities.

To Heart & To Heart 2 - well, a lot of cute girls are in here falling in love with the same person. If you like school-life harem, then this one will suit you. I guess no need for me to explain that one.

Tenchi Muyo - this is a universally harem anime. Lot's of stuff like aliens from space, a demon girl, a space cop etc.

Kanokon - A new show, and a lot of ecchi stuffs. But somehow, an amusing one if you like ecchi anime of course. Kouta is one playboy without him realizing that.

To Love-Ru - rhymes with trouble, still new (well, licensed already). another one of those sci-fi space visitors things. I personally like this show, especially Lala and her inventions.

Rental Magica- well, in a world of reality where magic exists and brought forth good and bad things alike. People tend to seek help from these mages for hire whenever their in a pinch or phenomena of magical pollution occur. Well, so much for the description. The main guy here is kinda dumb and innocent(?) but there's something in him that attracts all of those girls attention.

Itsudatte My Santa - a brilliant work, but too few episodes to watch though. Who wouldn't wish for a real santa (oops... just a santa in training) to come on christmas eve? And she's irresistible.

Canvas 2 ~Rainbow colored Sketch~ - one of my favorites. Basically, the stage focuses on the love triangle angle but there are other girls who like the main character. The ending kinda spoils the story but I guess it's just okey.

Mammotte Shugogetten - what would you do if a girl from comes out of a mirror and another out of a flute saying they'll protect you and give you happiness? surely our main lead here is quite lucky but...

Prism Ark - Although there is one girl that stands out the most, the main guy is simply a chick magnet for so many girls to be attracted to him. I'm looking forward to a next season on this.

Happy Seven - A lot of girls, one guy and one-sided love. And these seemingly competent characters who's out to save your day out of bad lucks.

Tokimeki Memorial ~Only Love~ - Riku just transferred to a prestigious school (not your ordinary one). Before he knows it, he was caught in a giant thread of the school's tradition with three girls (there's more) falling in love with him. The story is a bit slow, but for those comedy lovers you will enjoy this especially the part about the chick (I mean literally a chick).

DNA^2 - a mega playboy who impregnated 100 women whose offsprings impregnated another hundred and so on, all of which have the DNA of mega playboys. A girl from the future returns to the past to alter this phenomena but ended up emotionally attached to the our protagonist. Who will win in the end?

Hmmm.. did I forget something? Well just specify it if I miss mentioning that one.
Feel free to comment.

You did forgot Koharu Biyori OVA or you don't know that anime...
Anyway, another maid robot anime...

Well, I've seen a poll about reverse harem but never found anything like this so I wanna know your opinions.

Shuffle! is my favorite but I don't agree with the ending. KEY anime's will be my second bet, they have a lot of good OST's and a well choreographed comedy scenes. Da Capo never fails to captivates me with its twists and turns and School Days is one of those shocking endings I'd never imagine in an anime. I like others as well. Here are some more harem anime's I remembered watching:

Ah! My Goddess - Keichi is one lucky guy, he had wish for a goddess to be at his side, and what more, some other fell for him

Fate Stay Night - magic, servants, mages and the War for the Holy Grail. Shiro got himself involve in a sudden twist of fate interwinding with his past and his feelings.

Futakoi - twins, twins, twins! a lot of twins in here. what a lucky guy is the protagonist.

Girls Bravo - a different world of Seiren where men are a rare species. our protagonist coincidentally traveled there and bringing back a girl to earth, their adventure begins.

Onegai Twins - Speaking of twins again, here is a three person twin. Two girls claim to be the protagonist's twin but only one of them should. What happens now to their lives?

Ichigo 100% - Manaka is just one of the luckiest man on earth. He is just one ordinary guy but when he confessed to the school idol in an extra ordinary way (and got accepted!), his life was changed. More girls get closer to him as he moved on to college. Too bad, they didn't finished the anime and left it hanging.

Ai Yori Aoshi - this one centers mainly on the main heroine (for I can't see any other he could end up with), but I'd still classify it as a harem one.

H2O ~Footprints in the Sand~ - one of my favorite short series. There's so much depth to this one that I wouldn't call it a typical harem anime. Well, just watch this and see.

Elfen Lied - Bloody one, but nice. I miss this anime, too bad, it has been licensed already.

Nagasarete Airantou - well, what would you do if you just blown away into an island with only girls as residents and all wanted to marry you? The main guy here is also named Ikuto (same as that of Ikuto in Shugo Chara).

Negima! (Mahou Sensei Negima) - a male teacher in an all-girls school and furthermore he's a kid and a magician at that!

Maburaho - Shikimori is the world's greatest magician or shall I say the world's kindest person to attract four lovely girls to him

Hanaukyo Maids - one hell of a fan service anime. however, the main character seems to be allergic to girls except one.

He is My Master - another maid ecchi anime. Who wouldn't want to be rich to be able to hire some wonderful maids to serve you..

Hand Maid May - another anime with maid robots coming from the future. High fan service for you.

Hand Maid Mai - Creating a movie is quite a great task. Now here comes our director who has been blessed with three maid robots designed from his memory of his former childhood friend. Unfortunately, this anime was discontinued. I'm just hoping some company will pick it up and continue the series.

Lovely Idol - no intimate romance here, just that many of those Idols he raised still look up to him as a manager

Koi Koi 7- if you like those girls who rush into battle other than swords and stuff, better watch this one

Love Hina - a big hit who became a dating sim game, they should have released another season.

Otoboku - one guy disguised himself as a woman to get to an all-girls school and suddenly became popular as to become the school elder... that was some guts he has there

They are my noble masters - quite interesting, though I'd also classify hayate no gotoku in here too

Zero no Tsukaima - well, I just can't get enough of this one. Saito is one lucky guy (who is always unlucky before) for having those girls care so much for him especially Louise.

Mahoroba- don't know how I ended upn watching this one, but I had a good laugh. The main girl has several built-in (or shall I say parallel) personalities.

To Heart & To Heart 2 - well, a lot of cute girls are in here falling in love with the same person. If you like school-life harem, then this one will suit you. I guess no need for me to explain that one.

Tenchi Muyo - this is a universally harem anime. Lot's of stuff like aliens from space, a demon girl, a space cop etc.

Kanokon - A new show, and a lot of ecchi stuffs. But somehow, an amusing one if you like ecchi anime of course. Kouta is one playboy without him realizing that.

To Love-Ru - rhymes with trouble, still new (well, licensed already). another one of those sci-fi space visitors things. I personally like this show, especially Lala and her inventions.

Rental Magica- well, in a world of reality where magic exists and brought forth good and bad things alike. People tend to seek help from these mages for hire whenever their in a pinch or phenomena of magical pollution occur. Well, so much for the description. The main guy here is kinda dumb and innocent(?) but there's something in him that attracts all of those girls attention.

Itsudatte My Santa - a brilliant work, but too few episodes to watch though. Who wouldn't wish for a real santa (oops... just a santa in training) to come on christmas eve? And she's irresistible.

Canvas 2 ~Rainbow colored Sketch~ - one of my favorites. Basically, the stage focuses on the love triangle angle but there are other girls who like the main character. The ending kinda spoils the story but I guess it's just okey.

Mammotte Shugogetten - what would you do if a girl from comes out of a mirror and another out of a flute saying they'll protect you and give you happiness? surely our main lead here is quite lucky but...

Prism Ark - Although there is one girl that stands out the most, the main guy is simply a chick magnet for so many girls to be attracted to him. I'm looking forward to a next season on this.

Happy Seven - A lot of girls, one guy and one-sided love. And these seemingly competent characters who's out to save your day out of bad lucks.

Tokimeki Memorial ~Only Love~ - Riku just transferred to a prestigious school (not your ordinary one). Before he knows it, he was caught in a giant thread of the school's tradition with three girls (there's more) falling in love with him. The story is a bit slow, but for those comedy lovers you will enjoy this especially the part about the chick (I mean literally a chick).

DNA^2 - a mega playboy who impregnated 100 women whose offsprings impregnated another hundred and so on, all of which have the DNA of mega playboys. A girl from the future returns to the past to alter this phenomena but ended up emotionally attached to the our protagonist. Who will win in the end?

Hmmm.. did I forget something? Well just specify it if I miss mentioning that one.
Feel free to comment.

You did forgot Koharu Biyori OVA or you don't know that anime...
Anyway, another maid robot anime...

Well, I know that one. Sorry to have not mentioned it here.. Let me add it to the list. Also there is Rosario to Vampire, Sister Princess, Final Approach, Mamoru-kun ni Megami no Shukufufu wo!, True Tears and Rozen Maiden.

Well, I've seen a poll about reverse harem but never found anything like this so I wanna know your opinions.

Shuffle! is my favorite but I don't agree with the ending. KEY anime's will be my second bet, they have a lot of good OST's and a well choreographed comedy scenes. Da Capo never fails to captivates me with its twists and turns and School Days is one of those shocking endings I'd never imagine in an anime. I like others as well. Here are some more harem anime's I remembered watching:

Ah! My Goddess - Keichi is one lucky guy, he had wish for a goddess to be at his side, and what more, some other fell for him

Fate Stay Night - magic, servants, mages and the War for the Holy Grail. Shiro got himself involve in a sudden twist of fate interwinding with his past and his feelings.

Futakoi - twins, twins, twins! a lot of twins in here. what a lucky guy is the protagonist.

Girls Bravo - a different world of Seiren where men are a rare species. our protagonist coincidentally traveled there and bringing back a girl to earth, their adventure begins.

Onegai Twins - Speaking of twins again, here is a three person twin. Two girls claim to be the protagonist's twin but only one of them should. What happens now to their lives?

Ichigo 100% - Manaka is just one of the luckiest man on earth. He is just one ordinary guy but when he confessed to the school idol in an extra ordinary way (and got accepted!), his life was changed. More girls get closer to him as he moved on to college. Too bad, they didn't finished the anime and left it hanging.

Ai Yori Aoshi - this one centers mainly on the main heroine (for I can't see any other he could end up with), but I'd still classify it as a harem one.

H2O ~Footprints in the Sand~ - one of my favorite short series. There's so much depth to this one that I wouldn't call it a typical harem anime. Well, just watch this and see.

Elfen Lied - Bloody one, but nice. I miss this anime, too bad, it has been licensed already.

Nagasarete Airantou - well, what would you do if you just blown away into an island with only girls as residents and all wanted to marry you? The main guy here is also named Ikuto (same as that of Ikuto in Shugo Chara).

Negima! (Mahou Sensei Negima) - a male teacher in an all-girls school and furthermore he's a kid and a magician at that!

Maburaho - Shikimori is the world's greatest magician or shall I say the world's kindest person to attract four lovely girls to him

Hanaukyo Maids - one hell of a fan service anime. however, the main character seems to be allergic to girls except one.

He is My Master - another maid ecchi anime. Who wouldn't want to be rich to be able to hire some wonderful maids to serve you..

Hand Maid May - another anime with maid robots coming from the future. High fan service for you.

Hand Maid Mai - Creating a movie is quite a great task. Now here comes our director who has been blessed with three maid robots designed from his memory of his former childhood friend. Unfortunately, this anime was discontinued. I'm just hoping some company will pick it up and continue the series.

Lovely Idol - no intimate romance here, just that many of those Idols he raised still look up to him as a manager

Koi Koi 7- if you like those girls who rush into battle other than swords and stuff, better watch this one

Love Hina - a big hit who became a dating sim game, they should have released another season.

Otoboku - one guy disguised himself as a woman to get to an all-girls school and suddenly became popular as to become the school elder... that was some guts he has there

They are my noble masters - quite interesting, though I'd also classify hayate no gotoku in here too

Zero no Tsukaima - well, I just can't get enough of this one. Saito is one lucky guy (who is always unlucky before) for having those girls care so much for him especially Louise.

Mahoroba- don't know how I ended upn watching this one, but I had a good laugh. The main girl has several built-in (or shall I say parallel) personalities.

To Heart & To Heart 2 - well, a lot of cute girls are in here falling in love with the same person. If you like school-life harem, then this one will suit you. I guess no need for me to explain that one.

Tenchi Muyo - this is a universally harem anime. Lot's of stuff like aliens from space, a demon girl, a space cop etc.

Kanokon - A new show, and a lot of ecchi stuffs. But somehow, an amusing one if you like ecchi anime of course. Kouta is one playboy without him realizing that.

To Love-Ru - rhymes with trouble, still new (well, licensed already). another one of those sci-fi space visitors things. I personally like this show, especially Lala and her inventions.

Rental Magica- well, in a world of reality where magic exists and brought forth good and bad things alike. People tend to seek help from these mages for hire whenever their in a pinch or phenomena of magical pollution occur. Well, so much for the description. The main guy here is kinda dumb and innocent(?) but there's something in him that attracts all of those girls attention.

Itsudatte My Santa - a brilliant work, but too few episodes to watch though. Who wouldn't wish for a real santa (oops... just a santa in training) to come on christmas eve? And she's irresistible.

Canvas 2 ~Rainbow colored Sketch~ - one of my favorites. Basically, the stage focuses on the love triangle angle but there are other girls who like the main character. The ending kinda spoils the story but I guess it's just okey.

Mammotte Shugogetten - what would you do if a girl from comes out of a mirror and another out of a flute saying they'll protect you and give you happiness? surely our main lead here is quite lucky but...

Prism Ark - Although there is one girl that stands out the most, the main guy is simply a chick magnet for so many girls to be attracted to him. I'm looking forward to a next season on this.

Happy Seven - A lot of girls, one guy and one-sided love. And these seemingly competent characters who's out to save your day out of bad lucks.

Tokimeki Memorial ~Only Love~ - Riku just transferred to a prestigious school (not your ordinary one). Before he knows it, he was caught in a giant thread of the school's tradition with three girls (there's more) falling in love with him. The story is a bit slow, but for those comedy lovers you will enjoy this especially the part about the chick (I mean literally a chick).

DNA^2 - a mega playboy who impregnated 100 women whose offsprings impregnated another hundred and so on, all of which have the DNA of mega playboys. A girl from the future returns to the past to alter this phenomena but ended up emotionally attached to the our protagonist. Who will win in the end?

Rosario to Vampire- well, diverted from the traditional vampire scary thing etc. Here, a human boy enrolls in a school only for Yokai or Monsters. His days were full of unexpected events as yokai girls started to fall in love with him one by one.

Sister princess- twelve sisters each falling in love with their older brother. no much romance but we've got to explore each of their inner traits.

True Tears- One of the best I've seen so far. Amidst the anxiety a home and unresolved feelings bring, a young boy takes each step hesitantly as he choose to take flight or stay afoot on the ground. What path will he choose and whose hearts will be broken - the cheering childhood friend, the girl who gave away her tears or the one the one he promised not to leave alone?

Final Approach - this is just a short anime. I like the the Chibi modes so much(side comment). Well, what would you feel is suddenly a girl jumped from a helicopter into your window and suddenly announces that she is engaged with you to be your wife? Well this show is full of colors - comedy,drama, action, school life, harem and most of all, the girls are so KaWaII.

Mamoru-kun ni Megami no Shukufufu wo! - a boy enters a School for those who are blessed with abilities called Biatrice and got confessed on the very first day by the schools most renowned Beatrice User. How will his life and love commence?

Ayakashi - about strange creatures called ayakashi who lives on human beings as parasites. Well, they are basically weapons capable of destruction and fighting other ayakashis. Here we follow the story of a teenage boy who is about to awaken the true power within him and what lies ahead in his various encounters.

Sekirei - one of the newest releases featuring androids that have battle abilities. But before they can have their "wings" they must first find a contractor and seal their contracts.

Hmmm.. did I forget something? Well just specify it if I miss mentioning that one.
Feel free to comment.